Is there a way to plot original set of data onto biplot?

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Michelle on 7 Aug 2014
Commented: dpb on 11 Aug 2014
I want to plot all of my original data as a scatter plot onto the biplot created by PCA.

Accepted Answer

Peter Perkins
Peter Perkins on 11 Aug 2014
Michelle, the whole point of PCA is to create a new coordinate system. Plotting the original data in that coordinate system doesn't make sense. If you've done PCA, you must have the scores for your original data -- the scores are the original data transformed into the new coordinate system. Use BIPLOT to plot those - there's an optional parameter to do that.
Hope this helps.

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